i86 THE AMERICAN MUSEUM JOURNAL 



2. Skin smooth; no gland behind 



eye The Frogs. 



aa. A vein-like fold of skin from 

 behind eye to the groin. 

 Pale brown ; a dark-brown blotch 



behind the eye Wood Frog (Rana sylvatica). 



Olive, with large, round, black 



spots, irregularly scattered. . . Salt-marsh Frog (Rana virescens). 

 Pale brown, with four rows of 



large black spots Leopard Frog {Rana palustris). 



Green or olive; head paler Pond Frog {Rana clamitans). 



2b. No vein-like fold of skin. 

 Size large. 

 Olive, irregularly mottled with 



brown Bull Frog (Rana catesbiana). 



Descriptive List of the Toads and Frogs. 



The Common Toad, Bnjo lentiginosiis americanus Le Conte 

 (Fig. 16), is of moderate size and stout form. The skin is very- 

 rough. A large and prominent gland exists behind 

 omnon ^^^ ^^^ Color above brownish or yellowish brown, 

 with numerous large dark spots, narrowly, though 

 distinctly, edged with pale yellow. Extending down the center 

 of the back is a pale yellowish or whitish band. The abdomen 

 is dirty white. The ground color varies in individuals, some 

 being distinctly reddish, and is influenced by temperature and 

 changes on the individual itself from a lighter to a darker shade 

 or the reverse. The pupil of the eye is horizontal. 



The Toad is a familiar creature and is quite characteristic 



in appearance on account of its very rough glandular skin and 



the large, swollen glands behind the eyes. The hind feet are 



but slightly webbed. The blackish hue of the skin under the 



throat of the male Toad distinguishes it from the female. This 



skin is capable of great extension as the creature gives voice to 



the peculiar cry of the breeding season. The females are larger 



than the males. Length of body of male specimen, af inches; 



of female, 2? inches. 



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